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J Vet Cardiol ; 44: 43-47, 2022 Dec.
Article in English | MEDLINE | ID: mdl-36356367

ABSTRACT

A five-year-old, female-spayed boxer was referred for frequent and medically refractory paroxysmal supraventricular tachycardia. Diagnostic evaluation found no underlying structural heart or systemic diseases. Three-dimensional electroanatomical mapping and radiofrequency ablation were pursued. Activation mapping of normal sinus rhythm demonstrated the location of the sinus node in the posterolateral region of the right atrium. Activation mapping of the tachyarrhythmia identified a centrifugal activation pattern originating from the right atrium at the posterolateral aspect of the tricuspid valve orifice, suggestive of focal atrial tachycardia. A total of 10 ablation lesions were delivered to the earliest activation site. The dog recovered without complications and no recurrence of supraventricular tachycardia was noted on subsequent follow-ups.


Subject(s)
Catheter Ablation , Dog Diseases , Tachycardia, Ectopic Atrial , Tachycardia, Supraventricular , Dogs , Female , Animals , Catheter Ablation/veterinary , Tachycardia, Ectopic Atrial/diagnosis , Tachycardia, Ectopic Atrial/surgery , Tachycardia, Ectopic Atrial/veterinary , Tachycardia, Supraventricular/diagnosis , Tachycardia, Supraventricular/surgery , Tachycardia, Supraventricular/veterinary , Heart Atria , Sinoatrial Node , Electrocardiography , Dog Diseases/diagnostic imaging , Dog Diseases/surgery
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